Hellfire Fabrication now produces limited quantity batches before opening up for monthly drops rather than the old 'built to order' method. This reduces the feared fabrication wait times and increases the speed at which orders will ship.
Clients are still able to select their preferred setup while inventory lasts per month.
Once a configuration or option sells out, it will remain unavailable until a future production drop.
Processing and shipping times may vary depending on demand, holidays, weekends, carrier delays, and other factors outside of our control.
Feel free to contact Hellfire Fabrication by email with questions regarding fitment, special applications, or shipping costs.
THE BASTARD PIPE — V2
The ONLY Modular Catback Exhaust System
This system is 100% modular. Being modular allows you to save hard earned money when replacing damaged sections of exhaust from scraping or accidents. The Bastard Pipe aims to make custom fabrication much more obtainable than ever before. This is the last catback you will ever need.
FITMENT
2015–2021 WRX AND STI
FEATURES
- 3" 304 stainless steel construction
- Professionally TIG welded
- Back purged during welding
- Designed to bolt up to OEM/most aftermarket J-pipes.
- BEST used in junction with the Hellfire Fabrication J-Pipe.
- Utilizes vbands to reduce the need of gaskets, allow for an easier install, and breaks the trend of using slip fits for "quality" performance parts.
- May require tuning or re-tuning
- Off-road use only
- Professional installation is recommended
Does not include gasket or adapter for OEM j-pipe to catback flange mating section.
Some minor adjustments may need to be made post install to ensure perfect alignment due to adjustability of vbands during installation procedures.
AVAILABLE CONFIGURATION OPTIONS
- Single Exit > 5in OD at tip- Dump > 3in OD at tip
Price vary depending on selected options.
BOTH variants will come with a resonator section for best sound results. Maintaining the resonator helps with cabin drone. This does not impact backfire or turbo whistle noises.
It is recommended that you replace the exhaust hanger bushings with stiffer newer bushings for the dump variant Bastard Pipe. Failure to do so may result in shifting of exhaust during spirited driving or aggressive turns which may cause rattling/clunking sounds.
INSTALLATION REQUIREMENTS
When installing vbands, ensure that the threaded portions are not sticking off lower than the bottom of exhaust. These have the potential to snag over bumps/pot holes and lead to damaged vbands. This is most important for those that run a very low ground clearance suspension setup. Those running stock or track suspension setups should not see an issue with vband clock angle. If you are looking for an exhaust system that allows for maximum ground clearance, see Hellfire Fabrication Side Exits for the perfect low setup.
TUNING WARNING
A tune is not completely required for a catback exhaust, however it never hurts to check in with a tuner and get a professional opinion.
Hellfire Fabrication is not a tuning company and cannot provide tuning advice.
LIABILITY
Hellfire Fabrication will not be held liable for damage resulting from improper installation, negligence, improper tuning, inadequate clearance, or incompatibility with existing aftermarket components.
RETURNS
Returns will not be accepted if the exhaust has been installed, used, modified, altered, or damaged in any way.
Hellfire Fabrication prioritizes quality over quantity and will never sacrifice quality to rush production and fulfill quantity/timeline demands.
Each production batch is hand fabricated, inspected, and prepared for release in the United States before fulfillment.